Step and repeat machine.



A. H. MOTLEY, JR. & O. GHOUINARD.

STEP AND REPEAT MACHINE.

APPLICATION FILED AUG.16 1FO9 ,w j f l Patented Mar. 9, 1915 7 SHEETS*SHEET 1.

A. H. MOTLBY, JR. & 0. OHOUINARD.

STEP AND REPEAT MACHINE.

APPLICATION FILED AUG. 1c. 1009 Patented Mar. 9, 1915.

I SHEETS SHEET 2.

INVE/VTURS 60 1 ATTORNEY A. H. MOTLBY, JR. & 0. GHOUINARD.

STEP AND REPEAT MACHINE. APPLfCATION FILED AUG.1G, 11 0:,

Patented Mar. 9, 1915.

7 SHEETS*SHBET 3.

A. H. MOTLEY, JR. & O. CHOUINARD. STEP AND REPEAT MACHINE.

APPLICATION FILED AUG.16,1909. 1,131,630. Patented Mar.9, 1915.

7 SHBBTS'SHEET 4- NESSES Q mega/[gm AITURNEY A. H. MOTLEY, JR. & 0. GHOUINARD.

STEP AND REPEAT MACHINE.

APPLICATION FILED AUGJG, 190-9.

Patented M21119, 1915 7 SHEETS SHEET 5.

INVENTORS WITNESSES Q... G A...

' #a/LA ORNEYS,

A. H. MOTLEY, JR. & O. OHOUINARD.

STEP AND REPEAT MACHINE.

APPLICATION FILED AUG16.1909.

w 9 R 1 T 0 m T ONE W MM W M m I M m M S m 1 r 8 4 t d a Q a A u 4 6 g m r w Q m f & W E 1 q: 3 M 1 H r W 1 W4 4.

v "Pa 1 dump 1 9' ATTORNEYS.

A. H. MOTLBY, JR. & 0. OHOUINAED.

STEP AND REPEAT MAGHINE.

APPLICATION FILED AUG.16,1909.

1,131,630. Patented Mar. 9, 1915.

7 SHEETS-"SHEET 'I.

WIINE88ES VENTOR-S QJLWW gay w 7? in; ma was UNITED sTAtrnsra ENT ()FFICE.

ALFRED H. MOTIEY, JR.. AND OSCAR CHOUINARD,

OF NEW YORK, N. Y., ASSIGNORS,

BY MESNE ASSIGNMENTS, TO LITHOTEX CORPORATION, OF NEW YORK, N. Y., A

CORPORATION OF NE?- YORK.

Application filed August 16, 1909.

To a who) i! may concern:

l e it known that we, ALFRED H. Mo'rLEY. Jr, a citizen of the United States, and a resident of the borough of Manhattan, in the city. county, and State of New York, and ()scn: (:HOUINARD, a subject of the King of llng'land and a resident of the borough of Brooklyn, city of New York, county of Kings. and State of New York, have invented certain new and useful 1mprovements in Step and Repeat Machines, of which the following is a specification.

()ur invention relates to step and repeat machines for photographically reproducing a design upon a sensitized surface, and the invention relates more particularly to a step and repeat machine by means of which a design may be 1 hotographically reproduced a number of times upon different portions of a sensitized surface or plate either in the same or in an enlarged size by successively proje ting the image of the design through a suitable lens upon successive portions of the plate, and in which the plate and design are so arranged as to always be maintained in the (amjue'ate foci of the. lens while the size of th in'iagc is varicd, and in which re atise ll'lHYtlllCllt is produced between the sensitized plate on the one hand and the lens and unit design on the; other transverse to the line of projection, without disturbiiu: the previous adjustment of the parts along said line.

Our invention consists in providing an accurate and durablemachine of the above type. arrangedand constructed to operate easily. smoothly and rapidly; and it further c nsists in providing such a. machine with an indication dial or counting head, by means of wh ch the positioning of the suc cessive images on the plate may be accomplished with great precision.

Where it sought to use a step and repea machine in building up a design from a unit. the successive positioning of the images of the unit design upon the sensitized plate is an excewlingly delicate operation. as in some cases the numerous and delicate lines of the intricate configuration of an image must exactly meet and join the corresponding lilies of similar adjacent images: and where it is desired to produce plates for delicate and accurate multiple color printing, a plate for Specification of Letters Patent.

Patented Mar. 9, 1915. Serial No. 518,164.

each color each having a number of reproductions of a component part of the complete colored design, accurate registration of the corresponding reproductions on the different plates must be secured in order that the different plates bearing the reproductions of the component parts of the complete design in different colors will always register to produce accurate and perfect color etl'ects. Again, in building up designs on a step and repeat machine from a unit design, or in reproducing a sm'all print or design or two or more different prints or designs a great number of times on a large plate, it is very desirable, from the Standpoint of economy in plate surface and more especially in printing from the plate, that the image of the design or the images of the two or more different. designs, as the case may be, should be focused on the plate for stepping and repeating in a size or in sizes which will be an even factor of the area of the plate. so that as much of the plate surface a: piwsiblc will be utilized. In such cases, the designs on the plate, after being developed, may be photographic; lly enlarged or reduced to the required size, and the printing surface made up from this plate. In such work. the size of the image must. obviously, be very accurately determined, since any error would be cumulative, and, in order to obtain the desired size of image in perfect focus with any degree of despatch. it is essential that the machine be such as will maintain the focus while the size of the image is being adjusted on the plate. l eretofore it has been impossible to a complish the finer grades of work of the above elniracter with any step and repeat machine known to us. \Ve have found that. to successively accomplish this exceedingly accurate ork. it is important that the m0\'- able parts of the machine should be operated smoothly without great effort on the part of the operator, and without jar or vibration of the parts, so that there will be no strain or shock on the adjustable parts or the operating mechanism or any tendency to distort or loosen the same. any of which troubles would prevent quick and accurate work and in time cause lost motion between the different parts. Since, in performing this delicate and accurate work, the distance through which the plate is to be moved for each projection of the image thereon must be accurately measured or determined, we have found that it is also important to provide suitable indicating mechanism by means of which the positioning of the successive images of the design on the sensitized surface may be accomplished with great accuracy and precision.

The object of our inventionis to provide a step and repeat machine of the above type which will operate with such precision and accurac that it can be used for readily accomplishing such work as above described.

To this end, we provide a machine in which the sensitized plate and the object are always maintained in the conjugate foci of the lens, and in which the sensitized plate 15 repeatedly stepped horizontally and vertically transverse to the line of projection throu h the unit design and lens, without distur ing the previous adjustment of the three elements along the line of projection; and we also provide a dial having a movable marker or indicator adjacent to a rotating handle which is operated for shifting the plate, by means of which the distance of the successive movements of the plate may be indicated with great precision.

In the preferred form of our invention, as herein shown, we move the lens and unit design along the line of projection relative to the plate, and we mount the plate holder to slide back and forth horizontally on a guideway formed on a supporting carriage which, in turn, travels vertically on guideways mounted on the main frame, and we provide screws for operating the holder and carriage.

In machines made in accordance with our invention, an image of the design in an exact predetermined size may be quickly projected on the screen in perfect focus, and the mechanism may be operated with little effort or skill by a single operator, so that successive images of the design can be rapidly and easily projected upon the plate and made to register with great accuracy.

The sensitized surface upon which the design is reproduced may be that of a zinc plate or stone which, by subsequent development and etching, may be transformed directly into a printing surface, or the surface may be that of a transparent plate which may be developed, and from which a design may be photographed in a reduced or enlarged size upon a suitable surface which may be etched and then inked and transferred onto a roller which, after being etched, may be used in all kinds of continuous web printing upon textile fabrics, wall paper, etc.

Our invention will be more readily understood and the objects and advantages thereof will more fully appear from the following description taken in connection with the accompanying drawings, in which Figure l is a side elevation of the main frame of a machine embodying the invention; Fig. 2 is a cross-sectional view of one end taken on line ac--0c and showing the end of the vertical plate carriage in its guideway; Fig. 3 is a front view of the machine with the focusing apparatus removed; Fig. 4 is a detailed View of a crank arm; Fig. 5 is a side elevation of the assembled machine, partially in section; Fig. 6 is a side view of the rear part of the machine; Fig. 7 is a longi tudinal sectional view of the rear part of the machine; Fig. 8 is a cross-sectional view taken or line y-y of Fig. 7, omitting the holders; Fig. 9 is av diagrammatical illustration of the relation to the lens of the image and object distances; Figs. 10 and 11 are diagrammatical side elevations of the mechanism.

Referring to the drawings, Figs. 1, 3 and 5, the main supporting frame consists of uprights or side pieces 10 bolted to a base 13 and connected at their upper ends by a yoke or cross piece 12 and also connected intermediate their ends by two horizontal rods 11 on which is mounted a bracket 9 which supports the projecting apparatus hereinaic': r mentioned.

On the front faces of the uprights 10 are mounted smooth vertical guidcways 14 on which moves a vertically sliding carriage consisting of upper and lower horizontal bars 20 and 21 which extend across the front of the machine and are connected by vertical end pieces 22. The upper horizontal bar 20 has a tongue or guideway 38 formed on its front face with a groove 45 formed therein, and alon this guideway moves a horizontally sliding plate holder comprising upper and lower horizontal bars 39 and 40 with vertical connecting pieces 19. A channel in the upper bar 39 engages with the tongue 38 on the bar 20, and the holder is steadied at its lower end by means of a flange 41 secured to the lower horizontal bar 40 which engages a rabbeted edge of the horizontal bar 21 (Fig. 5) on which it slides. Thishorizontally sliding holder is adapted to receive the sensitized plate on which the design or pattern is to be reproduced.

Horizontal movement of the holder is effected by means of a handle 48 mounted on a threaded shaft 42 which extends along the groove 4-5 between the adjacent surfaces of the bars 20 and 39. The shaft 42 passes through a threaded nut-l3 (Fig. 33) secured to the rear of bar 39 and projecting within the groove 45, the shaft being journaled at its inner end in a bracket 44 formed in the groove 45 of bar 20, and at its outer end in a hub or sleeve 46, also secured to cross bar 20. By this means as the handle 48 is rotated, the horizontally moving holder is caused to frame. The lower ends of the and forth along the bars upon the direction of it ltlli l s the handle. in the particular emhodimwut ot' the invention shown, the threaded 'i has ten'threat s to the inch. so that one rewlution of the handle 48 Kitty-"P2 tin horizontally a distance of on;- tent: ineh.

It will be: seen from the aboudw'iwia-i construction of the. apparatus that tile pl 15* holding frame (as shown in Fig. 5) lb shdmgly suspended at its upper end trom the tongue or guideway, 38, so that it ina v hear at its lower end against the guide ha: 21 in engagement.with which it is prefer ably held from lateral displacement by the flange- 41 as above described. It will also he observed that the screw 4'2 which drives the plateholding fra.ne-horizontally along its horizontal supporting guide, engages the frame alone a line in proximity to the line of suspension'ot' the frame. This eonstruw tion insures a very smooth and easy opt-ii tion of the carriage. and effectively prevents any vibration or tendency to jam which would result from any cantin'g of the earriageon its support.

Vertical movement of the sensitihed plate is effected by means of two vertical thread ed shafts or screws 25 journaled in brackets 26 secured to the uprights 10, the shafts passing through threaded nuts 24 (Fig. 23 secured to the rear of the horizontal cross bar 20 of the vertically sliding carriage or vertical sha its 25 are provided with bevel gears mesh ing with bevel gears 29 on a horizontal shaft 30 journaled in sleeves 31 formed on bases 27 which support the brackets of the vertical shaftsthe bases 27 being secured to the up rights 10. This horizontal shaft 30 is :o tated by means of a crank handle 32, the tin-ads of the shafts 25 and the bevel ,qear ing being: such that one revolution of tilt handle 32 moves the carriage vertically a tenth of an inch.

Graduated dials or disks .37 37 are mounted respectively on the shafts I30 and 42 adjacent the respective handles 3;! and IF. the disk 37' b ing secured to huh H?- in which the shi is journaled. and dish !-T being secured adjacent upright Not the main frame i t s. "l and l). "be dis .1 re respectively provided with evenly .pav-td perforations 3l 3--l(3 and with markers 8 8 mounted concentric therewith so that each marker can he set'at any hole in its disk. The respective handles are provided with pins H -34' (Fig. 4) mounted in knobs 3Jt-33" and pressed toward the dial by springs 35, one for each of the pin so that \vheneier the operator r leases a knob the sprint fUlL'tS the pin into the hole with which it is in register. thus locking the shalt against further movement.

upper ends its upper end it 'lhr merhanism for and there n omprises the mounted on the two horiw newline the uprights ll sui Face of .ih'i l'll lf, and on the upper there s formed a i .ilgel l l Ull l ra-anr ear 2! .i'ntell in a 1. in pro" upper surface i .i tract: or gtnd way '[u ull which is sliding mounted a second frame or slide 5:: t ttl'i}'ll1 an object holder JT in which is placed the design to be projected. The rear end of this slide tT-Jis also provided with a ertical bracket Tl whirl: supports a box or cylinder 16 for rein-hing: a Mt lzlble light. The tirst. sliding frame or carriage .3: has two depending side pieces 53 connected at their low er extremities by a \Ulit Fit; and also connected intermediate their ends-d v a horizontal web or pie-we 55 and by a \crtieal wel. Til. The me hanism or adjiistL-ig the slides along: the line of projection is supported be tween these depending side pieces and eonsists of a shaft 5 supported at the front end in a sleeie 71'- secured at the lower point of hraclv'et the shaft also being journaled in a yoke Tl mounted on a braeltet 75 (Figs. 7 and S) which in turn is secured to the vcrtieal well '1 ronneeting the depending side pieces .73. The shaft 55 is provided with a rrank handle 21 at its front en l and is also provided with a gear 77 having a feather engaging a i i Q zd nal grown 7:! formed in the shaft. 7 n ear in turn me hes with pinions in invited, on vertical shafts 7 3 (Fig. 8). The lower ends ot' the \ertical shafts are st adied in the .-l\'e b and their are joiirnaled in bearings Ti e.\' tendii g from a hr; rltet 78 secur d to the horirimta k or moss piece 33. onnecting the side nieiiihers 3J3. llaiyh shalt rarriwv at pinion T wh h meshes with illlti lirarket s: ravrhr :1 Hear l levied on a horizontal --ert-vv l which is joiiri-zded at its rear end in the bra het 4H. and held from lou eitudintil movement ti'itr rtith b ioelt means l7 so as to insure meshing the gea H] with the pinions -T The HIFii lc' of the spindle t l engage with a nut S!) rigidly secured t the main enpporting bracltet t s that thr ugh the me dium ot' the above (ix-Sv'l'lllttl me hanism the sliding frame is moved bark and forth when the shaft 58 rotated by handle 21.

The parts of the \ertical shaft 76 extending below the bracket 75 (Fig. 7) are pro vided with threads corr sponding: to the threads on the screw Si. 8) is proiidml.

having threaded nuts engag ing with the thr ds on tin-vertical shai't 76, so that wt handle is r tated the yoke is raised or lo ered simultaneoasiy with the lmrizontal mnement of frame 5;. and at y ke .39 (Fig.

i to

the same rate as the frame is moved. The 'oke 59 carries at its outer extremities slide blocks 88 which are adapted to slide up and down in guideways 57 formed in the side pieces 53, and at the outside of each slide block there is a pivot pin 60 on which there is pivotally mounted a slide rod 61 (Fig. 6). These sliding rods 61 pass through swiveled guideways or sleeves 62 swiveled on slide blocks 66, and are connected at their upper ends to pivoted guides 63 secured to brackets 64 at the rear end of the slide 65. The slide blocks 66 on which are mounted the swiveled guides or sleeves 62 just mentioned are adjustably mounted in slots 67 and are moved by means of nuts 69 threaded on screws 68.

The slide blocks 66 do not slide in the slots during the operation of the machine, but said adjustment is for the purpose of primarily establishing the proper relation between the lens carrying slide 52 and the slide 65 carrying the design, therebv securing the necessary sharpness of the image of the design projected on the sensitized plate. \Vhen this adjustment is once made for any particular lens, the slide blocks 66 remain fixed in position and the rods 61 slide through the guideways or sleeves 62 which are pivoted on said guide blocks. This pivot or fulcrum point for a given lens will be at the intersection of two lines, one parallel to the line of movement of the connection of the sliding rod to the slide 65 and the focal distance of the lens from said line, the other line being parallel to the line of movement of the point of connection of said rod to the threaded shaft, or in this case, parallel to the slot 57 along which the other end of the rod slides, and at the focal distance of the lens from said line or slot. The slot 67 along which the fulcrum point is adjusted for different lens should extend along a line passing through the point of intersection of these two lines. Such a line will bisect the angle formed between the slot 57 and the line of movement of the end of the rod connected to the sliding frame 65. and as shown, the slot 67 along which the fulcrum point is adjusted will be at an angle of 45 degrees to the vertical slot 57.

When the shaft 58 is rotated to give a downward movement to the yoke 59 the ends of the yoke draw down with them the sliding rods. 61 which, as they move down, change their angle of inclination; and the upper ends being thrown forward, move the slide 65 forward toward the sensitized plate.

The gearing mechanism is so proportioned that while the slides 59. and 65 are simultaneously moved by rotating the handle 21, their respective rates of movement are such as to decrease or increase the distance of the object or design holder from the lens so as to vary the size of the image of the design on the sensitized plate while at all times maintaining the sensitized plate and the object or design holder in the conjugate foci of the lens. This is shown diagrammatically in Figs. 10 and 11. In Fig. 10, the lens is shown equidistant between the object or unit design and the image, so that the size of the image is equal to that of the d sign. In Fig. 11, the changed positions of the design and the lens produce an imagt three times the linear dimensions of the d sign. Fig. 9 illustrates the principle in "olved in the focusing movement; and in this figure, the sides F of the square are equal to the focusof the lens used.

Extending two sides 0L and OS until they intersect any line R swung through the intersection I of the two opposite sides of the square F, the lengths LO- f' and 3 7 7 will be to each other as F (n+1) is to and are thus equal to the conjugate foci of the lens F for an ob'ect distance f, and the image distance P. et

f F:Y

and

f'--F=X and X:7LF then X:F=F:Y nFzF.-.F:Y

X nF hence f:F+nF=F(l+n) Q. BID.

The diagram of Fig. 9 demonstrates the distances f and f in directions at right angles to each other whereas in actual practice, they are mostly needed in a continued straight line.

Figs 10 and 11 show how by gearing a horizontal rod representing the length i to a vertical rod f, to which.the same movement is imparted in a vertical plane, the length f is obtained in the horizontal continuation of f. a

With such a machine as described, when it is desired to enlarge the image on the sensitized plate, handle 21 is rotated in the direction to move the lens slide 52 rearwardly on the bracket away from the sensitized late and at the same time the sliding re s 61 will be drawn down through their sockets so as to more the object slide 63 forward upon the lens slide .32 in the direction of the sensitized plate: but since the lens slide traveling faster away from the sensitized plate than the object slide is moving upon the lens lide. the result of these movements will be that both the lens and the object will be nun ed away l'rom'the sensitized plate to increase their distance thei'efrom, while the lens and the object will approach each other in such manner as to maintain the focus. Conversely, when it is desired to reduce the size of the enlarged image upon the sensitized plate, the handle 21 is rotated in the opposite direction to move the lens slide 52 toward the sensitized surface, the rods 61 at the same time moving the object slide rearwardly upon the lens slide; but inasmuch as the lens slide will approach the sensitized surface more rapidly than the object slide will move rearwardly upon the lens slide, the result of the movements will be that both the lens and the object will be brought nearer to the sensitized plate While the distance between the lens and the object will be increased in such manner as to maintain the proper focus.

In the particular embodiment of the machine shown, the sliding rods 61 are so relatc l.to the vertical slot 57, and the lens and sliding frames 52 and 65 are so positioned with respect to the sensitized plate that the transformation of the design is approximately unity when the sliding rods 61.

are in the position shown, namely, with their lower ends near the upper extremity of theslot 57.

The specific construction of the automatic focus-maintaining apparatus .herein shown and described, forms no part of our invention.

The operation of the machine will be best understood from the following description,

in which the building up of a continuous,

design from a unit is set forth.

photographic reproduction of the unit design is placed in the object or design holder 1? and it is adjusted therein in any suitable position. When the unit design is in the proper position in its plane, a focusing screen is placed in the sensitized late holder and the holder on the front 0 the frame is then moved in the manner described so as to bring the image in a suitable position on the screen, say in the extreme lower left-hand corner. The shaft 21 is then rotated to adjust the image of the unit design upon the focusing screen to the desired size, maintaining at all times a sharp focus of the image on the screen. \Vhcn the image with its register marks is adjrsted to the proper size the focusing screen is then replaced by the sensitized plate or surface, and a projection of the unit design is made upon this plate. Knowing the Width of this image and knowing the distance that the plate holder will be moved by each rcvolution and traction of a revolution. of the operating handle is. the marker 8 is then set in position and the pin 3 l withdrawn and thehandle rotated the required number of revolutions and fraction of a revolution necessary to move the plate lmrizontally the exact distance of the Width of the unit de sign, whereupon the knob Si; is released and the pin 34 will be forced by spring 3 into I the hole with which it is in register. and then a second image of the unit design is projected upon the sensitized plate, and this operation repeated ,until the full row of unit designs is completed. whereupon the handle 36 of shaft 30 will be simila ly rotated to move the vertically slidin carriage to shift the sensitized plate vertically the height of a unit image and a projectmn of the unit de sign is again made and so on.

It will thus be seen that we have provided an eflicient and durable machine requiring but one operator for focusin and stepping, and that the machine may fie rapidly and smoothly operated to focus an image in the exact predetermined size and to produce very, accurate registration in reproducing and in building up designs on a sensitized plate, which machine we have found in practice to be free from vibrations which tend to upset the delicate adjustment required in apparatus of this class.

\Vhile we have described the operation of the machine in forming a complete design built up of reproductions of a unit design, for which work the particular form of machine shown is especially adapted, it is obvious that our invention may be used for many purposes where it is desired to reproduce one or more designs photographically.

Having thus described our invention, what we claim as new and desire to secure by Letters Patent, is:

1. In a step and repeat machine forph- 'r togra 'ihically reproducing ties-signs. t bination of a lens, a holder for a at lsitized plate, a holder for an object, said holders being located in the conjugate foci of thelens, means for simultanra'msly altering the relative positions of the lens and the holders with respect to each other along the line of projection to adjust thesize'of the image of the object while maintaining the focus, a supporting frame on which the plate holder is mounted in a plane transverse to the line of projection and in front of the lens, means for moving said plate holder in said plane horizontally and means for moving 1t vertically in said plane without disturbing the adjustment of the parts along the line of projection. i

2. In a step and repeat machine for photographicall y reproducing designs, the com bination of a lens, a holder for a sensitized plate, a holder for an object, said holders being located in the conjugate foci of the lens, means for simultaneously shifting the lens and object holder along the line of projection so as to adjust the size of the'image of the object while maintaining the focus, a supporting frame on which the plate holder is mounted in a plane transverse to the line of projection and in front of the lens, means including screw gearing for moving said plate holder horizontally in said plane, means including screw gearing for moving said plate holder vertically in said plane, and dials equipped with markers, one operatively related to each of said screw gearing for determining the positioning of the images on the plate.

3. In a step and repeat machine for photographically reproducing designs, the coinhination of a lens, a holder for a sensitized plate, a holder for an object, said holders being located in the conjugate foci of the lens, means for simultaneously altering the relative positions of the lens and the holders with respect to each other along the line of projection so as to adjust the size of the image of the object while maintaining the holders respectively in said conjugate foci, a supporting frame on which the plate holder is mounted in a plane transverse to the line of projection and in front of the lens, means including a threaded shaft and a nut operating thereon and secured to the plate holder for moving said plate holder horizontally in said plane, a dial mounted concentric with the shaft, a marker also mounted concentric with the shaft and operatively related to the dial to indicate the de sired movements of the shaft for shifting the plate, and a part mounted on the shaft to rotate therewith and movable over the dial to indicate the movements of the shaft.

4. In a step and repeat machine for photographically reproducing designs, the com bination of a lens, a holder for sensitized plate, a holder for an object, said holders being located in the conjugate foci of the lens, means for simultaneously shifting the lens and object holder along the line of projection to adjust the size of the image of the object while maintaining the focus, a supporting frame having two uprights, vertical guideways or tracks on the uprights, a vertically moving carriage slidingly mounted on said guideways and extending between the same, means including a vertical screw and a nut operating thereon, one mounted on the supporting frame and one on the carriage for moving the carriage on its guideways, a horizontal guideway or track on said carriage on which the plate holder is slidingly mounted, means including a horizontal screw mounted on the vertically moving carriage and a nut operating thereon and mounted on the plate holder for moving the plate holder along said horizontal guide- Way, operating handles, one actuating the rotatable member of the screw and nut for moving the carriage, and the other actuating the rotatable member of the screw and nut for moving the plate holder, and means operatively related to said rotatable members for determining respectively the verti cal and horizontal movements of the plate holder. i

5. In a step and repeat machine for photographically reproducing designs, the combination of a lens, a holder for a sensitized plate, a holder for an object, said holders being located in the conjugate foci of the lens, means for simultaneously shifting the lens and object holder alon the line of projection to adjust the size of the image of the object while maintaining the focus, a supporting frame having two uprights, vertical guideways or tracks on the uprights, a vertically moving carriage slidingly mounted on said guideways and extending between the same, a pair of vertical threaded shafts rotatively mounted on the frame, a threaded nut on each shaft secured to the carriage, means including a horizontal shaft geared to the threaded shafts for rotating the same to move the. carriage vertically, a horizontal guideway or track on said carriage on which the plate holder is slidingly mounted, and means including a horizontal threaded shaft for moving the plate holder along said horizontal guideway.

(3. In a step and repeat machine for pho tographically reproducing designs, the combination of a lens, a holder for a sensitized plate, a holder for an object, said holders being located in the conjugate foci of the lens, means for simultaneously shifting the lens and object holder along the line of projection to adjust the size of the image of the object while maintaining the focus, a supporting frame having two uprights, vertical guideways or tracks on the uprights, a vertically moving carriage slidingly mounted on said guideways and extending between the same, said carriage comprising upper and lower cross pieces connected by vertical end pieces, means including a pair of parallel vertical threaded shafts and a horizontal operating shaft geared thereto for moving the carriage on its guidcways, a horizontal guidewa or track on the upper and lower cross pieces of the carriage on which the plate holder is slidingly mounted, said plate holder having a cross piece parallel with and slidinglv mounted upon the upper horizontal guidcwa the adjacent surfaces of the upper cross piece of the carriage and plate holder having a groove formed therein, a threaded nut on one of said u per cross pieces, and means including a orizontal threaded shaft loc fed in gection to adjust tho of d support said groove and jonrnslcd on the other cross pi ce and cn inq tl'icthrcadcd nan to move tho plate llOhl li i ri -zonlally along ti e car riagc.

T. In a stop and rope? machine for ph0- tographicall rou'uci g, designs. the conr liinalion of" a a lioinrr for a it'ized plate, a holdcr or an object, i being located in the conjugate loci of the ions, means for simultaneously shifting the lcns'and ohicct holder along thc linev oi pro- W image of the obii'ct nhile.niaiiitaining the focus, :1

mg frame having two uprights, vortical guidcways or tracks on the uprights, a

vertically moving carriage slidin'gly mount ed on said guidcavays and extending be tween the same. a pair of vertical paiallcl screw threaded shafts each having a nut operating thereon for supporting the carriage and moving it on its vertical guideways, a horizontal shaft mounted on the supporting frame and gearcd to said threaded shafts to rotate the same to move the carriage vertically, a horizontal guideway 01' track: on said carriage on which the plate holder is slidingly mounted, a horizontal threaded shaft and a nut. operated thereon for moving the plate holder along the horizontal'guideway, each of said horizontal shafts having mounted thereon a dial with a marker opcratively related tl1erct0,.a1id an operating handle for each of said hori zontal. shafts, whereby the successive trans verse movements of the plate may he accuratcly determined for positioning images of theidesign thereon.

8,'In a stop and repeat machine for photographically reproducing dcsigi'is, the com l'unation of a lens, a holder for a sensitized plate, a holder for an object, said holders being located in the conjugate loci of the lens, means for simultaneously shifting the lens and object holder aloing the line of pro jcction to adjust tln: sir e of the image of tho olijcct while maintaining tho 'l'mns szipporting framn havi a main hast plate with two uprights, vertical gui huvavs or tracks on the uprights, a vertically moving carriage slidinglv mounted on said gnidcways and extending between the same, means for moving the carriage vertically on the guidcways including a vertical screw and a nut operating tlieroon, one mounted on the carriage and the othcron the sup 'l'mltlng' frame. and a horizontal rotatable "operating shaft 7 provided with an operating handle and also mounted on the supporting frame and gearod to the screw gear member mounted on said .i'rame. a horizontal guideway or track on said carriage upon which the plate holder is slidingly mounted, means for moving the plate holder Qn said guideway including a horizontal screw and a nut d holders plntc. a holder for an object, said home's lining locatci-l in the conjugate foci of file l iis, means forsimultaneously shifting the lens and object holder along the line of projcc ion to adjustthe size of the image-0f the i; ivhhe maintaining thofocus; a supp0 frame having two uprights, vertical guidcn'avs or tracks on the uprights, a vertica ly movable carriage slidingly mounted 2i onlmvays and comprising upper and ssancces and connecting end pieces, being provided with means for slidingly ngaging the vertical guidewa s to maintain the carriage in a vertical, p a116, means for driving the carriage vertically including a vertical screw and a nut operating thereon, one mounted on the supporting frame and the other on the carriage, a horizontal rotatable shaft also mounted on the supporting frame and gearcd to said driving means, and an operating handle for said shalt} a horizontal guidcway extending along the upper orosspiecc of said carriage, the plate holder lining provided'with means at its upper end for slidingly supporting it from said horizontal guiden'ag, means for moving tho plate holder along said guidef lmllilliinr a nut secured to the. upper end of the plain holder with screw mounted on a; 'd carriage and extending parallel with tho horiroatal guidcway and engaging said out, and a handle for operating the screw to more the carriage along said guido \va v. ll). .li: a step and repeat machine for photograpliically reproducing designs, the combination of a lens, :1, holder 01. tLSGIlSltIlZBd plate, a ho der for an ohiect, said holders lining lnoatcd n, the conjugate foci of the l -us. means for ,sinniltaneously shifting the oliirci" holder along the line of pro" ions aiid patina: to ad ust the size of the rings of the ol cct n'hilrmaintaining tho focus, a sup porting irauic having:- two uprights, vertical gnidmvavs or tracks on the uprights, a \ortic'ally :noyablc carriage slidingly mount-ed I on the guidcwavs and comprising upper and 'horizontal guidcwav eXtending'a-long the upper part of said carriage from which the plate holder is slidably suspended so" that it may hear at its lower and against the lower cr0ss-piece of the carriage with which it slidingly engages, means for moving said plate holder along said horizontal guideway including a screw and a nut operating thereon, one mounted-0n the plate holder and the other on the carriage and extending along a line parallel with the horizontal guideway and in proximity thereto, and an operating handle connected with said screw gearing to move the plate holder along the guideway,

whereby any tendency of the plate holder to 10 bind on the guideway is prevented.

In Witness whereof, we have hereunto set our hands this 2nd day of July, 1909.

ALFRED H. MOTLEY, JR. OSCAR CHOUINARD. Witnesses:

AcNns L. CLUNE, ANTHONY F. ARCQINE. 

